Tufted perennial; culms 60–100 cm. high.. Leaf-blades linear, 10–15 cm. long, 5–6 mm. wide, straight at the base, sparsely hairy, tapering to an abruptly pointed tip.. Panicle oblong, 20–30 cm. long, sparsely branched, the branches long, spreading or ascending.. Spikelets ovate-oblong, 3–3.5 mm. long, glabrous, acuminate; lower glume broadly ovate, less than 1/4 the length of the spikelet, 1-nerved, acute; upper glume ovate, 7–9-nerved, acuminate; lower lemma 7-nerved, sterile, its palea well developed; upper lemma dark and glossy.
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